–We should do what we can _____ the endangered animals.` --Yes, it’s duty_____ them.
#50588
A
save, to protect
B
save, protect
C
to save, protect
D
to save, to protect
推荐题目
Could you please ________?
#49476
A
do the dishes
B
doing the dishes
C
to do the dishes
D
did the dishes
In the old days, people lived in caves and they had to make a fire _________themselves warm.
#50642
A
to keep
B
keeping
C
keep
D
kept
The librarian told the readers _________ loudly in the library.
#50370
A
to talk
B
not to talk
C
talk
D
talking